Home / 18,771.09-25,913.46-10,811.76

Finding the Fourth Proportional to 18,771.09, 25,913.46 and 10,811.76

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Solution

The fourth proportional to 18,771.09, 25,913.46 and 10,811.76 is: 14,925.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.09 : 25,913.46 = 10,811.76 : x
  2. Step 2: Convert to fraction form
    18,771.09/25,913.46 = 10,811.76/x
  3. Step 3: Cross multiply
    18,771.09x = 25,913.46 × 10,811.76
  4. Step 4: Simplify right side
    18,771.09x = 280,170,110.29
  5. Step 5: Solve for x
    x = 280,170,110.29/18,771.09
  6. Step 6: Final answer
    x = 14,925.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.